Switch throw



Nov. 17, 1925- D. OSBURN SWITCH THROW Filed Feb. 27. 1925 INVENTOR ATTORNEY Pa tentecl Nov. 17," 1925.

DAVID OSBURN, OF GRINDSTONE, PENNSYLVANIA. I

swnrcrr THROW.

Application filed. February 27, 1925. Serial 1%. 12,053.:

To all whom it may concern: 4

Be it known that I, DAVID OSBURN, a citizen 'of the United States, residing at Grind? stone, in the county of Fayette and State of Pennsylvania, have invented new and useful Improvements in Switch Throws, of

which the following is a specification.

This invention relates to Switch 7 operating means, and more particularly to a switch throw intended for use in mines.

One of the main objects of-the invention is to provide a switch throw of simple construction and operation which may be used as a spring switch or a throw switch or a combination of both. A further object is to provide a switch throw so constructed as to eliminate breakage of parts as a result of strains to which they are subjected in use. Further objects will appear from the detail description.

In the drawings:- Figure 1 is a top plan throw; 7

Figure 2 is a side view; Figure 3- is a section taken substantially on line 33 of Fig. 2;

Figure dis a section taken substantially on line4 4 of Fig. 5; i

Figure 5 is aside view ing structure; V

Figure '6 is a diagrammatic view illustrating the use of the switch throw in connection with a siding;

Figure 7 is a diagrammatic view illustrat ing the use of a switch throw in connection with a spur track. I

The present invention is intended more particularly as an improvement over the switch throw disclosed in my patent for switch-throwing device, No. 1,024,27 9 issued April 23, 1912.. The device of my patent view of the switch of the supportis held in operative position by a tension cation avoids these" objections and provides proved form of my device I provide asupporting structure which includes two frames 1 of approximately inverted U-shape which are provided, at'their lower-ends, withofi PA TN? OFFIQE'P a device whichis thoroughly practical and, highly eflicient in its operation. In the imv 56 set legs 2 and with securing feet 3 disposed in angular relation to thelegs, these feet being adapted for reception of lag screws by means of which theframeis' secured to ad jacent ties ofa railway, as indicated. Two

semicircular members 1- are secured between frames 1 by riveting or in any other suitable erating lever- 6 which is pivotally secured between members 4: by means of a 'bolt .7 r which is positioned between the ends o'fxle-" ver 6. A rod 8 of a switch bridle is secured to a clevis 9which is pivotally secured .by;

a bolt-10 to the lower end of lever 6. The upper end of lever 6 is pivotally secured by a bolt 11 to the lower end of a control lever 12- which projects -upwardly."'between the upper approximately semi',-circular portionsl i of frames 1; these frames being held in spaced relation bythe end portions-of members 4t and cooperatingwith these members to form a circular frame the upper portion of which guides the control lever and the lower portion of which guides the operating lever as described. To hold the control lever 12 in operative position I provide stop pins 13 which are inserted through any one,

ment l An angle bracket 15 'is pivotally secured to lever 12" above frames 1. by a bolt 16 and a similar bracket 17 issimilarly secured to lever'16 adjacent the lower end thereof. A headed rod18 extends through the outwardly projecting arm of bracket ,15 and through two plates or clips 19, this'i b rod being held against withdrawal'through the lower clip 19. by apnutq20 threaded onto 7 the rod. A similar rod 18 extends through the outer arm of bracket 17 and throughthe clips 19, a nut 20'beingthreaded onrthe or preferred manner, thesemembers being offset outwardly so' as to be spaced apart from each other attheir-centralportions thus providing aslot 5 'for'r eception of an op- An expansion coil.

confined between clips 19. This spring acts by expansive force to urge the leyerstl and 12 toward each other about pin or bolt 11, these levers constituting, in efiect, a toggle which is normally held in broken position with the pivot 11 positioned to one side of a vertical plane coincident with the axis of pivot pin or bolt 7. in Figure 2 levers 6 and 12 are held in the positions illustrated by the combinedaction of spring 21 and the stoppins 18 which are positioned in the uppermost pairs of openings 14. In this position, when the switch points to? which the rod 8 is connected are opened against the action of the spring 21, lever 6 is rocked about its pivot 7 in the direction indicated .sucha distance as to bring pivot 11 beyond isopened' by the'tlange ofa car wheeli parts associated therewith.

.at a is as a sp ing so the center of the supporting structure, at which time spring 21 acts to complete the throw of the switch thus holding the switch points in open position, the levers 6 and 12 being positioned oppositely to the positionsill'ustrated in Figure 2. By placing the pins in the third pair of openings 14. from the center, the levers 6 and l are disposed at such. an angle to each other that the pivot point 11 is beyond the center of the frame such a distance that, when the switch point the movement of rod 8 will be sui'li'cie .t to move the pivot point 11 beyond center-in the opposite direction.- In this case, after a car has passedthrough the switch, the switch points will be returned to their orig"- inal positions by the action of spring 21 and By placing one of the pins 13' in the uppermost pair of one series of openings and the other pin 13 in the third pair from the top of the other series of s. the device may be so set that a spring switch inoue direction and a throw switch in the opposite direction. i

in Figures 6 and 7 I have indicated dia- "ramn'iat' ally thev'arious uses of my switch In Fig" re (5 the device indicated switch the device in dicated'at Z) beingset as a spring switch-in one dir ctien and a throw switch in the other direction. lnFig'ure 6, the device is so set thatjthe switch'is closed so as to direct a cartro'm the main traclr M onto a siding .S which leads 'on'toth'e main track at 8, this main track leading to dump D. The device. at Z), is set so as to act as aspring switch for cars passing offof the siding S onto the n 'tin tack and as a throw-switch for cars we down port-ion. m of the main track the {innit}?- lif'ith the two devices, set in this-manner. carstravelingtoward the sid- S on the main track will befdiverted onto the sidmg' S which in pract-icejwould the trip that it is desired to move a trip of cars from the siding onto the main track in a direction away from the dump, the cars will travel from the siding onto the main track at a, the switch at this end of the siding remaining closed. In'the event that it is desired to take a trip of cars to the dump on the main track without going onto'the siding, the device'at (I, is operated manually so as to open the switch permittln the trio 1 n a D to enter 'p'ortionm of themain track, after which the device at a is returned to its original setting so as to close the switch. lVhen the trip reaches point a on the main track the switch point is operatedfby-..the

flange of thecar wheel and the switch is opene'ch and held open 'bythedevice. 5', which acts a s 'a-throwf switch illthiS-d-lIGC: tion. Upon return of the trip from the dump D; it" continuesfto travel upon the main track as the switch at s is open; travel?- ing along portion mot themaintra'cks -As reaches theswitc'hiat the swltch point is displaced by the flange of the car wheelbut is immediately returned to closed be directed onto the. siding S upoirwh'ich it can travel onto the main track andalong the main track to the dump. As; this second trip enters the siding" at points; the

switchpoint in themain' track will be dis-- placed by the flange of the carwheel but will'be ;immediately returned to its position ai'ljacent the main track rail by the action of the device 7) which is set to act as a spring: switch in this direction. This keeps the switch at 8 open so that upon return of this second trip it will travel through the switch at s along'the m'aintrack to and tl'iroughtthe switch at a. If, however; it is desired to direct this second trip'onto the siding S the'device at b is operated manually to close the "switch at sth'us directing thesecondtrip from the main track onto the siding." In Figure 7 the deviceis shown 1 as used in connection with a main track 'M and, a spur track ST, the main track leading to the dump D. "Thedevice 0, in this instance, is set 'to act as a' throw switch in both directions.- VViththe switchpoints closed as indicated, a trip travelingalong the main track tothe dumpwilll displace the switch points and the thrmnot the switch points .willl xbe. completed and the switch will'be held open by the device at tering' the spur track,

1. In a switch throwing device, a sup porting structure, an operating lever P1X;

otally mounted between its ends on said struture, a switch bridle rod connected to one end of'said lever, a control leverpivotally connected to the other end of the operating lever, means urging the levers toward each other about their pivotal connection while permitting movement ofthe levers away from each other when pressure in the proper direction is applied to either lever, and, adjustable means for limiting movement of the control lever in either die rection about its pivotal connection with the operating lever.

2. In a switch throwing device, a supporting structure, an operating lever pivotally mounted between its ends on said structure, a switch bridle rod connectedto one end of said lever, a control lever pivotally connected at one end to the other end of the operating lever, resilientrmeans acting under compression to urge the levers toward each other about their ivotal connection, and adjustable means or limiting movement of the control lever in either direction about its pivotal connection with the operating lever.

8. In a switch throwing device, a sup porting structure including two members disposed in spaced parallel relation and forming a guiding frame, an operating lev-' er pivotally mounted between its ends on the supporting structure, a switch bridle rod pivotally secured to the end of the operating lever remote from said guiding frame, a control lever pivotallyconnected to the other end of the operating lever and extending loosely through the guiding frame, resilient means acting to urge the levers to-, ward each other about their pivotal connection, and adjustable means for limiting movement of the control lever in either direction. r

4. In a switch throwing device, a supporting structure, an operating lever pivotally mounted between its ends on said structure, a switch bridle rod pivotally 'secured to one end of the operating lever, a control lever pivotally connected at one end to the other end of the operating lever,

resilient means urging the levers toward each other about their pivotal connection,

andhadjustable means-for limiting inovement ofthe control leverin eitiher tion. v I a; p In a" switch throwingidevicepa sup porting structure,,an operating lever pivotally, m ounted' between its ends on saidstructure, a switch bridle rod pivotally secured to one end of the operating lever,

.a control lever pivotally connected atone end to the other end ofthe operating lever,

resilient means urging. the levers toward each other about their pivotal connection, and adjustable'ineans for limiting movement of the control lever in either direction, the means for limiting movement of the control lever in one direction independently of the being adjustable means for limitin'gmovement of the control lever inthe other direction whereby said limitingmeans may be adjusted to permit greater movement of said control lever in one direction than inthe other direction.

*6. In a switch throwing device, a suportin structure includin a uidin b b D O frame, an operating lever pivotally mount-f ed between its ends'on, the structures remote from the guiding frame, a switch bridlerod pivotally secured to the end of theoperating lever remote from said guiding" frame, a control lever pivotallycon nected at one end to the other end of the v I guiding frame and extending loosely through said frame, resilient means acting under compression to-urge the levers toward each other about their pivotal con nection, and adjustable means for limiting movement of the control-lever in either direction. i v 7. In a switch throwing device, a supporting structure including a guiding frame, an operating lever pivotally mounted on the'supporting structure remote from said frame, a switch bridle rod pivotally secured tothe end of the lever remote from the guiding frame, a control lever pivotally:

connectd at one end-to the other end of the operating lever and extending loosely through the guiding frame,'said frame being provided with seriesof pairs of aligned openings, stop pins inserted through selected pairs of the openings and acting to.

limit movement of the control lever in;

.either direction, and resilient means for urging thelevers' toward each other about their pivotal connection.

8. In a switch throwing device, a supporting structure, anoperating lever pivotally mounted between its ends on said structure, aswitch bridle'rod pivotally se-e cured to the end of the lever remote from the structure, a control lever pivotall secured "at onevend to the other end o the other lever, the supporting structure, in cluding a guide frame'loosely receiving the 7 control lever, means for limiting 'move- 3 expansion spring mounted about said rods and confined between the plates and acting under compression to urge the levers to- Ward each other about theirpi'mta'l eonnecti-on, and means for preventing Withdra-Wa of the rods through the plates, said means being adjustable to vary" the 001m pression of the spring;

In testimony whereof l affix my signature. DAVID OS'BURN, 

